Thanks for the advice Rick. I've logged off and back on again and my unread relpys show empty.:D
Thanks Rick: I've finally managed to reply to my personal messages. :confused: I STILL don't know how to mark a reply or message as read. The site...
Dear Rick: :?: I'm having a couple of problems with this site so I need to ask a couple of seemingly dumb questions. (1) How does one mark a reply...
Yes Rick, the velocity ratio IS quite high. I should mention that the Albacore used variable pitch props with the pitch being specified at 0.7 r....
Thanks Rick: I agree that the best and most efficient drive arrangement will probably be the single prop and stator. I think that the...
Thanks Rick, I think I understand what you mean. Sounds a lot like the flat X-sect blades that were used in the earliest propeller designs. I...
I am VERY surprised! If by a flat plate, you mean that you are dispensing with the helicoidal axial blade twist as well as the cambered suction...
:) Sounds good. Love the under-cambered foil. I had expected a flat pressure face. Obviously, the foil thickness will have to increase from the...
:) Thanks Rick: I am quite surprised at the efficiency figure (82%+)you obtained for the projected 1:20 scale prop (impeller). How confident are...
Sounds great to me! :?: There are a couple of questions I'd like to ask about the impeller design though. What clearance would you recommend...
Thanks Rick: You beat me to it! I was not happy with my most recent post and chose to edit it this morning. Your reply just came in! Just out of...
Thanks again for all the feedback folks! :D After careful consideration of your suggestions, I have decided to go with a 12mm diameter...
Dear Rick: What suffices for micro RC aircraft will not work for a high performance model torpedo. Water is 800 times as dense as air and...
Dear Rick W.: ::( The problem is that the heaviest components (motor and battery pack) will have to be mounted on the C.L. of the torpedo....
Dear Rick: The problem is that at 1/20 scale, the torpedo will be only 1.05-1.1"D x 14.5-15"L and displace APR 170g H2O. Within this small...
:confused: I am a model submariner but have subscribed to this forum because the the basic principles governing the design of model vs full scale...
